Not even in the big pipeline studios, I can't see how the 4K price just for the machine and expect to invest in the pro monitor another 4K (with the ergonomic stand it will be 5K). To sum it up for the OP, Mac Pro is not worth investment.

The processor is already old and the graphic card is impossible to replace. This turned out to be very expensive and not usable monitor. I bought a special machine for Houdini and other CGI stuff when I realized how painfully expensive is my iMac 5K retina. So in 2019 people are once again saying that Apple is dead (in the CG/graphics world), but who knows? They could surprise us all. Back in 1995 people were saying that Apple was dead, and look at them now. Having said all that, time will tell and tech trends are always unpredictable. I mean it's not just Apple being jerks, the underlying technology is actually very powerful. Apple seems heavily invested in those 3rd party companies and is apparently providing them with resources and help in porting their software to Metal. Houdini was heavily featured in a series of Apple videos a while back and I believe their relationship is strong. SideFX seems equally committed to the OSX platform. In Redshift terms that might mean Spring 2020 at the earliest, but I have no doubt that those guys are putting some real resources into it. Maxon is heavily committed to the OSX platform which means they're pressuring Redshift to get on the Metal conversion ASAP. I believe so, but what do I know? Here's what I've been able to gather from various sources: 1.

Metal graphics card mac